USPlabs Jack3d does it for me product is awesome, I started on the recommended 1 scoop prior to workouts and on the first few times it was amazing, gave me heaps of energy and I just felt stronger.

Loved the tingles that accompanied the product

I do believe you build up a tolerance pretty quickly though because after about 3 weeks I now need to use about 2 scoops to get the same feeling I had previously

Overall great product and I would recommend it to anybody